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Iron Mountain Inc

IRM
Exchange
NYSE
Industry
Real Estate Investment Trusts
SEC CIK
0001020569

In the last 90 days, Iron Mountain Inc insiders filed 0 open-market purchases and 6 sales; 1,173 institutions reported holding it in 13F filings for Q2 2026, worth $32.4B in total; no superinvestor holds it.

13F holders, Q1 2023

Institutional positions in Iron Mountain Inc as of Mar 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
790
+20 vs. Q4 2022
Shares held
225.9M
−2.74M (−1.2%) vs. Q4 2022
Total value
$12.0B
+$601.6M (+5.3%) vs. Q4 2022
New holders
74
302 more added
Sold out
54
266 more reduced

12 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2022: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting IRM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2023: 790 institutions
Q1 2021: 630 institutionsQ2 2021: 687 institutionsQ3 2021: 711 institutionsQ4 2021: 754 institutionsQ1 2022: 777 institutionsQ2 2022: 767 institutionsQ3 2022: 743 institutionsQ4 2022: 782 institutionsQ1 2023: 790 institutionsQ2 2023: 817 institutionsQ3 2023: 831 institutionsQ4 2023: 891 institutionsQ1 2024: 938 institutionsQ2 2024: 967 institutionsQ3 2024: 1,056 institutionsQ4 2024: 1,067 institutionsQ1 2025: 995 institutionsQ2 2025: 1,045 institutionsQ3 2025: 1,017 institutionsQ4 2025: 1,011 institutionsQ1 2026: 1,090 institutionsQ2 2026: 1,173 institutions
Value heldQ1 2023: $12.0B
Q1 2021: $8.44BQ2 2021: $9.70BQ3 2021: $9.94BQ4 2021: $12.0BQ1 2022: $12.4BQ2 2022: $10.9BQ3 2022: $10.0BQ4 2022: $11.4BQ1 2023: $12.0BQ2 2023: $12.9BQ3 2023: $13.7BQ4 2023: $16.4BQ1 2024: $19.0BQ2 2024: $22.2BQ3 2024: $28.8BQ4 2024: $24.9BQ1 2025: $21.1BQ2 2025: $25.5BQ3 2025: $25.5BQ4 2025: $21.4BQ1 2026: $25.9BQ2 2026: $32.4B
Institutions holding IRM and their total value by quarter
QuarterHoldersValue
Q2 20261,173$32.4B
Q1 20261,090$25.9B
Q4 20251,011$21.4B
Q3 20251,017$25.5B
Q2 20251,045$25.5B
Q1 2025995$21.1B
Q4 20241,067$24.9B
Q3 20241,056$28.8B
Q2 2024967$22.2B
Q1 2024938$19.0B
Q4 2023891$16.4B
Q3 2023831$13.7B
Q2 2023817$12.9B
Q1 2023790$12.0B
Q4 2022782$11.4B
Q3 2022743$10.0B
Q2 2022767$10.9B
Q1 2022777$12.4B
Q4 2021754$12.0B
Q3 2021711$9.94B
Q2 2021687$9.70B
Q1 2021630$8.44B

Institutions, Q1 2023

Shares, value and share of portfolio for each institution holding Iron Mountain Inc; share changes are against Q4 2022.

Institutions holding IRM in Q1 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Financial Avengers, Inc.555$29.4K0.02%+7+1.3%Added
Lindbrook Capital, LLC554$29.3K0.00%+5+0.9%Added
Focused Wealth Management, Inc534$28.3K0.01%−87−14.0%Reduced
Compass Wealth Management LLC525$27.8K0.01%00.0%Unchanged
Trust Co of Vermont520$27.5K0.00%00.0%Unchanged
Hazlett, Burt & Watson, Inc.500$26.0K0.02%00.0%Unchanged
Baystate Wealth Management LLC453$24.0K0.00%+5+1.1%Added
Byrne Asset Management LLC450$24.0K0.02%00.0%Unchanged
Leonteq Securities AG437$23.1K0.00%+436+43,600.0%Added
Johnson Financial Group, Inc.430$22.8K0.00%+430New
PFS Partners, LLC419$22.2K0.02%00.0%Unchanged
Bank of New Hampshire400$21.2K0.01%00.0%Unchanged
AlphaMark Advisors, LLC400$21.0K0.01%00.0%Unchanged
First Personal Financial Services390$20.6K0.01%−338−46.4%Reduced
First Community Trust NA385$20.4K0.02%00.0%Unchanged
Savior LLC380$20.1K0.02%00.0%Unchanged
Piscataqua Savings Bank353$18.7K0.02%00.0%Unchanged
Caldwell Trust Co350$18.5K0.00%00.0%Unchanged
GeoWealth Management, LLC341$18.0K0.00%−48−12.3%Reduced
Whittier Trust Co of Nevada Inc329$17.4K0.00%00.0%Unchanged
Ronald Blue Trust, Inc.335$17.0K0.00%−1,494−81.7%Reduced
WR Wealth Planners, LLC300$15.9K0.01%+300New
IAG Wealth Partners, LLC295$15.6K0.00%00.0%Unchanged
Covestor Ltd281$15.0K0.01%−82−22.6%Reduced
Institutional & Family Asset Management, LLC273$14.5K0.00%00.0%Unchanged
Livforsakringsbolaget Skandia, Omsesidigt261$13.9K0.00%00.0%Unchanged
CVA Family Office, LLC255$13.5K0.00%+60+30.8%Added
Harbor Investment Advisory, LLC253$13.4K0.00%−22−8.0%Reduced
Westside Investment Management, Inc.250$13.2K0.00%00.0%Unchanged
Larson Financial Group LLC246$13.0K0.00%+20+8.8%Added
Kistler-Tiffany Companies, LLC241$12.7K0.00%+3+1.3%Added
Zions Bancorporation, N.A.240$12.7K0.00%−25−9.4%Reduced
Quent Capital, LLC240$12.7K0.00%00.0%Unchanged
Glassman Wealth Services228$12.1K0.00%00.0%Unchanged
JFS Wealth Advisors, LLC220$11.6K0.00%00.0%Unchanged
BerganKDV Wealth Management, LLC217$11.5K0.00%+2+0.9%Added
Chilton Capital Management LLC205$10.8K0.00%+205New
Farmers & Merchants Investments Inc195$10.3K0.00%00.0%Unchanged
HHM Wealth Advisors, LLC184$9.74K0.00%+46+33.3%Added
Prestige Wealth Management Group LLC179$9.58K0.00%−75−29.5%Reduced
Northwest Investment Counselors, LLC178$9.44K0.00%+178New
Coston, McIsaac & Partners173$9.00K0.00%+2+1.2%Added
Chesapeake Asset Management LLC170$8.99K0.01%+170New
Kozak & Associates, Inc.156$8.27K0.00%+2+1.3%Added
Rain Capital Management, LLC152$8.04K0.01%+152New
Cutler Group LP168$8.00K0.00%−142−45.8%Reduced
Harel Insurance Investments & Financial Services Ltd.160$8.00K0.00%−120−42.9%Reduced
Rise Advisors, LLC144$7.63K0.01%+2+1.4%Added
Carmichael Hill & Associates, Inc.143$7.57K0.00%00.0%Unchanged
Earnest Partners LLC133$7.04K0.00%00.0%Unchanged
GW&K Investment Management, LLC140$7.00K0.00%00.0%Unchanged
Benjamin Edwards Inc135$7.00K0.00%+2+1.5%Added
Householder Group Estate & Retirement Specialist, LLC138$7.00K0.00%+138New
Park Place Capital Corp132$6.98K0.00%+2+1.5%Added
Assetmark, Inc131$6.93K0.00%−53−28.8%Reduced
Bell Investment Advisors, Inc117$6.19K0.00%−80−40.6%Reduced
Colonial Trust Advisors115$6.08K0.00%−16−12.2%Reduced
Tradition Wealth Management, LLC120$6.00K0.00%00.0%Unchanged
Moisand Fitzgerald Tamayo, LLC113$5.98K0.00%00.0%Unchanged
Motco113$5.98K0.00%+113New
Capstone Investment Advisors, LLC110$5.82K0.00%−4,143−97.4%Reduced
McIlrath & Eck, LLC100$5.29K0.00%00.0%Unchanged
Cape Investment Advisory, Inc.100$5.29K0.00%+100New
Hoese & Co LLP100$5.28K0.01%00.0%Unchanged
Stonebridge Capital Advisors LLC99$5.23K0.00%+1+1.0%Added
Red Tortoise LLC94$4.97K0.00%00.0%Unchanged
MV Capital Management, Inc.80$4.23K0.00%+4+5.3%Added
Bartlett & Co. LLC70$4.00K0.00%00.0%Unchanged
Bartlett & Co. Wealth Management LLC70$3.75K0.00%00.0%Unchanged
Sandy Spring Bank46$2.46K0.00%00.0%Unchanged
Hollencrest Capital Management44$2.33K0.00%00.0%Unchanged
Raffa Wealth Management, LLC39$2.06K0.00%00.0%Unchanged
Kelly Financial Services LLC36$1.91K0.00%00.0%Unchanged
Trifecta Capital Advisors, LLC27$1.43K0.00%00.0%Unchanged
Core Alternative Capital25$1.32K0.00%+25New
Concord Wealth Partners22$1.16K0.00%00.0%Unchanged
Eagle Bay Advisors LLC20$1.06K0.00%00.0%Unchanged
JJJ Advisors Inc.19$1.00K0.00%00.0%Unchanged
Ci Investments Inc.16$1.00K0.00%00.0%Unchanged
Resources Management Corp33$1.00K0.00%+33New
SkyView Investment Advisors, LLC22$1.00K0.00%+22New
Baker Avenue Asset Management, LP17$8990.00%00.0%Unchanged
Versant Capital Management, Inc16$8380.00%00.0%Unchanged
Gradient Investments LLC10$5290.00%00.0%Unchanged
Wolff Wiese Magana LLC5$2650.00%+5New
Fortis Capital Advisors, LLC3$1590.00%−1−25.0%Reduced
Key Financial Inc1$530.00%00.0%Unchanged
Capital Advisors, Ltd. LLC4$00.00%−16−80.0%Reduced
Baldrige Asset Management LLC9$00.00%+9New
EP Wealth Advisors, LLC1,059––−14,712−93.3%Reduced
NewSquare Capital LLC0$00.00%−10−100.0%Sold out
Cbre Clarion Securities LLC0$00.00%−1,237,999−100.0%Sold out
LSV Asset Management0$00.00%−1,155,544−100.0%Sold out
Berger Financial Group, Inc0$00.00%−104,120−100.0%Sold out
Bridgewater Associates, LP0$00.00%−90,623−100.0%Sold out
Renaissance Technologies LLC0$00.00%−80,600−100.0%Sold out
Cubist Systematic Strategies, LLC0$00.00%−54,819−100.0%Sold out
Ergoteles LLC0$00.00%−51,271−100.0%Sold out
De Burlo Group Inc0$00.00%−47,000−100.0%Sold out
Simplex Trading, LLC0$00.00%−31,638−100.0%Sold out